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(!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1963-1969 (86ma and 88ma) (these are some of the best sounding 6B4G ever made)
(!!!!) (Recommended Pair) 6C4C=6B4G Russian NOS 1963-1969 (86ma and 88ma) (these are some of the best sounding 6B4G ever made)
$ 99.99
1 matched pair) 6C4C=6B4G Russian NOS 1963 and 1969 in white boxes
1 tube) 86ma Gm=6300 (1963)
1 tube) 88ma Gm=6400 (1969) taller glass
Internal construction superior to American made 6B4G
Test Data:
Vplate=225V
Vgrid=-30V
GOOD NOS Ma range 70-90ma
GOOD NOS Gm = 5200
Recommended for
(6B4G=6.3V filament)
(6B4G is electrically equivalent to 6A3, but 6A3 has UX-4 pin base and 6B4G has 8 pin octal base)
(The best sounding 6B4G are 1940's-1950's: Ken Rad, Tungsol, Sylvania, Raytheon)
See more: vacuum tube
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 (Recommended Pair) 6C4C=6B4G Russian NOS 1963-1969 (86ma and 88ma) (these are some of the best sounding 6B4G ever made)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_3e7e6a2a-7e41-40b6-b479-221ce2c3b0d1.jpg?v=1651786630){kind=link}
 (Recommended Pair) 6C4C=6B4G Russian NOS 1963-1969 (86ma and 88ma) (these are some of the best sounding 6B4G ever made) "Pin It")